name : activate-storage.sh #!/bin/sh # # This script activates storage at boot after the iSCSI login. It can # be called from both the init script as well as the native systemd # service. # PATH=/usr/sbin:/sbin:/usr/bin:/bin MULTIPATH=/sbin/multipath VGCHANGE=/sbin/vgchange if [ -f /etc/default/open-iscsi ]; then . /etc/default/open-iscsi fi # See if we need to handle LVM if [ ! -x $VGCHANGE ] && [ -n "$LVMGROUPS" ]; then echo "Warning: LVM2 tools are not installed, not honouring LVMGROUPS." >&2 LVMGROUPS="" fi # If we don't have to activate any VGs and are running systemd, we # don't have to activate anything, so doing udevadm settle here and # potentially sleeping (if multipath is used) will not be productive, # because after waiting for both of these things, we will do nothing. # Therefore just drop out early if that is the case. if [ -d /run/systemd/system ] && [ -z "$LVMGROUPS" ] ; then exit 0 fi # Make sure we pick up all devices udevadm settle || true # Work around race condition here: after udevadm settle it is # guaranteed that all iSCSI disks have now properly appeared, but # other dependent devices may not have. This can include multipath # mappings of iSCSI devices (multipathd will race against udev for # locking the underlying source block devices when it comes to # creating the mappings, and it will retry the lock only once per # second, and typically succeed only on second try), but also # partitions on the given disks (which the kernel scans # asyncronously). # # The proper way of handling this is to have LVM activation and/or # mounting of file systems be handled in a completely event-driven # manner, but that requires configuration by the sysadmin in the # case of LVM, and for mounting it only works with systemd at the # moment. For compatibility with how the package handled this # previously, we will work around this race for a while longer. if [ -x $MULTIPATH ] ; then # 1 second is too short for multipath devices to appear, # because multipathd takes more than 1s to activate them # after udevadm settle is done. sleep 3 else sleep 1 fi udevadm settle || true # Handle LVM if [ -n "$LVMGROUPS" ] ; then if ! $VGCHANGE -ay $LVMGROUPS ; then echo "Warning: could not activate all LVM groups." >&2 fi # Make sure we pick up all LVM devices udevadm settle || true fi # Mount all network filesystems # (systemd takes care of it directly, so don't do it there) if ! [ -d /run/systemd/system ] ; then if [ $HANDLE_NETDEV -eq 1 ] ; then mount -a -O _netdev >/dev/null 2>&1 || true # FIXME: should we really support swap on iSCSI? # If so, we should update umountiscsi.sh! swapon -a -e >/dev/null 2>&1 || true fi fi